Emergency response and experience analysis of a dengue fever outbreak at a construction site in Shenzhen in 2023
- Author:
HE Jianliang
;
LIU Yang
;
ZHANG Shaohua
- Publication Type:Case Reports
- Keywords:
Construction site;
dengue fever outbreak;
mosquito control;
epidemic disposal;
experience analysis
- From:
China Tropical Medicine
2024;24(10):1211-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the methods and strategies that should be adopted by the pest control operations (PCO) company in mosquito control during a dengue fever outbreak in a construction site, by summarizing and analyzing a case of mosquito control in a dengue outbreak at a construction site. Methods By reviewing relevant materials such as case data, mosquito vector monitoring data, and on-site disposal records, we conducted an investigation, summary, and analysis of the mosquito control process during a dengue fever outbreak in a construction site in Qianhai, Nanshan District in 2023. Results Four main control stages were carried out in response to this outbreak. The first stage was the comprehensive emergency control stage, involving treatment twice daily, with up to 50 personnel deployed each day, using 52 liters of chemicals. The second stage was the consolidation control stage, with treatments twice a week, deploying 4 people each time, and using 4.5 liters of chemicals. The third stage was the emergency prevention control stage, with treatments once daily, deploying 6 people each time, and using 8 liters of chemicals. The fourth stage was the closing stage, where treatment methods were the same as in the second stage. The main methods adopted included ultra-low volume spraying combined with residual spraying for adult mosquito control, supplemented by thermal foggers for indoor environments in the construction site, along comprehensive removal of breeding sites. Seven days after the start of the control measures, both the Breteau index (BI) and the mosquito oviposition index (MOI) were reduced to 0, with no subsequent cases occurring, indicating a significant control effect. Conclusions The complex environment of the construction site poses significant challenges for control measures, and PCO emergency teams should adopt appropriate control strategies for disposal.
- Full text:202511111619590712010.Emergency response and experience analysis of a dengue fever outbreak at a construction site in Shenzhen in 2023.pdf
